24÷(1-25%)
=24÷75%
=24×43
=32
答:乙数是32.
故选:A.
氢镍电池的总反应式是H2 + 2NiO(OH) 2Ni(OH)2 。根据此反应判断,下列叙述中不正确的是( )
A.放电时,电池负极周围溶液的pH不断增大
B.电池充电时,镍元素在阳极被氧化
C.电池放电时,H2是负极
D.电池充电时,H2在阴极生成
When his uncle to school every day? [ ]
A. do; go
B. does; go
C. is; goes
D. is; going